Route 66 runs north-south between Hamilton E. Holmes Station and the Barge Road Park and Ride. Buses travel along Martin Luther King Jr. Drive, Brownlee Road, Lynhurst Drive, Harbin Road, Childress Drive, Mt. Gilead Road, Greenbriar Parkway and Barge Road, serving Cascade Springs Nature Preserve, D.M. Therrell High School and Greenbriar Mall.